Apple's Campus 2 is being built from the remains of a former HP campus, literally

Apple's enormous Campus 2 building site in Cupertino, CA, has been pretty much off limits since construction began (excepting hard-to-restrict aerial photography), but San Francisco public radio station KQED got a quick on-the-ground tour of the site which, well, it's very much a construction site right now. Lots of concrete and steel and whatnot, just arranged in the ring of the Apple Campus 2 design instead of more traditional right-angled structures.